Caledonia Gas And Storage

First Revised Volume No. 1

Effective Date: 09/30/2010, Docket: RP10-1032-000, Status: Effective

Original Sheet No. 21 Original Sheet No. 21

AISS RATE SCHEDULE

ADVANCED INTERRUPTIBLE STORAGE SERVICE

1. AVAILABILITY

1.1 This Rate Schedule is available to any Customer for the purchase of

Advanced Interruptible Storage Service from Caledonia, provided that:

(a) Caledonia has determined that it has operationally available and

uncommitted Interruptible storage capacity and injection and withdrawal

capacity to perform the Service Customer has requested;

(b) Caledonia has determined that the Service Customer has requested

under this Rate Schedule will not interfere with efficient operation of

its System or with Firm Service;

Storage Service Agreement under this Rate Schedule;

(d) Customer satisfies the creditworthiness criteria in accordance with

Section 4 of the General Terms and Conditions;

(e) Customer accepts responsibility for arranging any upstream and

downstream transportation service required for utilization of the

Service provided under this Rate Schedule; and

(f) Caledonia shall not be required to construct, modify, expand or

acquire any facilities to enable Caledonia to perform any requested

Service under this Rate Schedule.

2. APPLICABILITY AND CHARACTER OF SERVICE

2.1 Applicability. This Rate Schedule shall apply to all Advanced

Interruptible Storage Service rendered by Caledonia to Customer through

use of Caledonia’s System pursuant to an executed Advanced

Interruptible Storage Service Agreement. Advanced Interruptible Storage

Service rendered by Caledonia to Customer under this Rate Schedule shall

consist of:

(a) The injection into storage on any Gas Day of Customer’s Gas per

Customer’s nomination, up to Customer’s MDIQ as stated in the executed

Advanced Interruptible Storage Service Agreement with Customer,

provided that all Firm Service nominations for injection have been

satisfied, Customer Delivers the nominated quantity, plus Fuel

Reimbursement, at the Point of Injection/Withdrawal available on

Caledonia’s System, and Customer’s Advanced Interruptible Storage

Inventory has not exceeded its MSQ;